Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints

N Gubeljakme; J Predan; M Oblak; R Pippan

doi:10.1520/STP11500S

SYMPOSIA PAPER Published: 01 January 2005

STP11500S

Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints

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The effect of residual stress on the fatigue crack growth was investigated for cyclic tension. Three-point bend specimens were used with through thickness notches at the center line of the welded joint. The experiments were performed for different load amplitudes and load ratios under conditions of small-scale yielding. The influence of the residual stresses on fatigue crack growth was estimated by experimentally observed fatigue crack growth rate and measurement of residual stresses at the surface of specimen. This paper describes an approach taken in two models to estimate the residual stress effect on fatigue crack propagation and to predict remaining service life of a welded structure.

Author Information

Gubeljakme, N

University of Maribor, Maribor, Slovenia

Predan, J

University of Maribor, Maribor, Slovenia

Pippan, R

Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben, Austria

Oblak, M

University of Maribor, Maribor, Slovenia

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Details

Developed by Committee: E08

Pages: 281–298

DOI: 10.1520/STP11500S

ISBN-EB: 978-0-8031-5505-3

ISBN-13: 978-0-8031-2410-3

Effect of Residual Stresses on the Fatigue Crack Propagation in Welded Joints

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